# Is 20/4 a rational number

##### *2019-11-12 01:48*

Rational Numbers. Can be expressed as the quotient of two integers (ie a fraction) with a denominator that is not zero. Many people are surprised to know that a repeating decimal is a rational number.Since the set of rational numbers is countable, and the set of real numbers is uncountable, almost all real numbers are irrational. [1 Rational numbers can be formally defined as equivalence classes of pairs of integers ( p, q ) such that q 0, for the equivalence relation defined by ( p 1, q 1 ) ( p 2, q 2 ) if, and only if p 1 q 2 p 2 q 1. is 20/4 a rational number

By definition, rational number ab (where a and b are integers and b is not 0) is a number, which, when multiplied by b, produces a. Division of two rational numbers, ab by cd is similarly defined as a rational number, which, when multiplied by cd, produces ab.